| 摘要 |
PROBLEM TO BE SOLVED: To provide a preparation process of a room temperature vulcanizable silicone composition which is crosslinked when subjected to moisture and generates an elastomer. SOLUTION: A starting material comprising (A) 100 pts.wt. polydiorganosiloxane, (B) from 3 to 15 pts.wt. silane, (C) from 5 to 250 pts.wt. filler and (D) from 0.01 to 5 pts.wt. catalyst, is supplied to an axial-flow mixing turbine. This axial-flow mixing turbine possesses a shaft having blades which are positioned along the vertical axis of a casing and rotate in a direction perpendicular to the vertical axis of the casing, has a supplying aperture at the near end and an exhaust aperture at the far end of the casing to allow the material to flow in the direction of the blades, and mixes (A), (B), (C) and (D). The produced mixture is introduced into a vacuum degassing apparatus to remove volatile components.
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